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The attitude that objects which are scientifically proven to be 3-dimensional are actually 2-dimensional or flat.
Jack: "Look at that planet, it is sooo spherical!"
John: "No, I believe you are wrong! It is obviously flat!"
Jack: "Dude, your flattitude is showing!"
by moisays April 15, 2017
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Sep 8 Word of the Day
A casual invitation / threat used by an individual that is not afraid of fucking someone up.
PAUL: I'm going to beat your ass.

JACK: Fuck around and find out, fool!
by NX STARCHILD October 16, 2020
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2
That grateful feeling when your flatulence doesn't leave a surprise in your shorts.
While stuck in traffic, Dave gave a sigh of flattitude when the fart was only a fart.
by elKeitho May 26, 2016
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